While oldest source of it, note that the 86-DOS v0.1-C binaries are even earlier (and v0.34 has also been found) than this v1.00 source and can be downloaded an

While oldest source of it, note that the 86-DOS v0.1-C binaries are even earlier (and v0.34 has also been found) than this v1.00 source and can be downloaded and used in an emulator. :-) https://arstechnica.com/gadgets/2024/01/the-oldest-known-version-of-ms-doss-predecessor-has-been-discovered-and-uploaded/ https://arstechnica.com/gadgets/2024/01/the-oldest-known-ver...